The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 1983
Filed:
Apr. 13, 1981
Applicant:
Inventor:
Richard W Midland, Inverness, IL (US);
Assignee:
Zenith Radio Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; G09G / ; G09G / ;
U.S. Cl.
CPC ...
358 64 ; 358 66 ; 358240 ; 358242 ; 340701 ; 340720 ; 340766 ;
Abstract
A billboard video display system comprises a plurality of cathode ray tubes arranged in a predetermined configuration, each of the cathode ray tubes including a viewing screen characterized by a coarse color phosphor pattern. The electron beam generated by each of the cathode ray tubes is scanned across its respective viewing screen and modulated for developing a plurality of color picture elements. The picture elements so produced combine to form a selected billboard video display picture with the picture elements associated with each respective tube representing an unrecognizably small portion thereof.